EP1733982A1 - Reel winding device and method for simultaneously winding a plurality of side by side running partial webs of material - Google Patents

Abstract

The winding system for parallel strips of cardboard or paper, especially for use in slitter-rewinders, comprises a sleeve (5) which connects the spools on which the strips are wound. This is automatically brought into the winding machine before the spools are slid in and automatically taken out after they have been removed. An independent claim is included for a method for simultaneously winding strips of paper or cardboard, especially for use in slitter-rewinders, using the system.

Description

The invention relates to a roll winding device, in particular for a slitter, for simultaneously winding a plurality of juxtaposed partial material webs, in particular paper or board webs, on winding tubes to winding rollers each having a winding position for each winding roll, wherein a plurality of winding positions are arranged in the axial direction one behind the other, and with a winding bed forming a support roller assembly below the winding positions.

Furthermore, the invention relates to a method for the simultaneous winding of several juxtaposed partial material webs according to the preamble of claim 8.

Roll winding devices, in particular carrier roll winding machines, are used for winding material webs, in particular paper or cardboard webs, into winding rolls. The carrier roll winding machines have a first and a second support roller, which are adjacent to each other and form a winding bed for receiving cores, on which the material webs (partial webs) are wound side by side. In this case, the webs are usually produced as partial webs of a single, wound on a full roll of material web by the wound on the full-drum material web during its unwinding longitudinal cutting devices for generating the partial webs passes. The partial webs produced are then wound side by side on cores.

The fact that in the winding bed next to each other several mostly made of cardboard cores collision of sleeve guide heads, each drive and non-drive side in the adjacent cores drive into each other, are pressed together, which are then wound with the webs, the cardboard cores lengthen due to Layer pressing the wound on the cores material web winding and under the additional load of a pressure roller, which presses from above on the winding rollers.

The elongation of the cores is for example 1 per thousand of their length. Since all adjacent cores are "fixed" by the clamping heads in position, so can not expand freely, large axial forces and vibrations in the cores. These forces and different winding diameters, among other things due to profile variations of the material web in the cross-machine direction, lead to the offset of the sleeve centers to each other, whereby the smoothness during winding is significantly disturbed. It can come to a "swinging" of the winding rolls and / or vibrations, which forces to a reduction of the winding speed and thus leads to a loss of productivity. A very disadvantageous effect is that the adjacent winding rolls are not centrally fixed. Therefore, they do not rotate about a common axis, but offset in the middle, which can lead to non-centric sitting cores. The corresponding bobbins then run in the settlement of printing machines out of round, which is unacceptable.

To create a smoother running, is from the European Patent EP 0 792 245 B1 a winding method for adjacent winding rollers known in which the coefficient of friction of the cores to be reduced among themselves. For this purpose, the ends of the cores, while or before they are arranged at the winding positions, treated with a medium which reduces the friction, or pieces of a low coefficient of friction material are placed at the ends of the cores. Or it is the axial thrust between the Winding cores reduced by a pressurized medium from side coil locking devices is guided into the cores and each ejected between the cores.

Furthermore, in the German Offenlegungsschrift DE 199 60 000 A1 a double carrier roll winding machine described, in which the sleeves of the roll ejection are penetrated by a winding rod. The winding rod is in this case attached to a winding rod insertion device. This embodiment has the disadvantage that it is both functionally complicated and structurally auslagernd.

The invention is therefore the object of developing a slitter of the type mentioned in such a way that disturbances in the winding of the bobbins and in the further processing of the bobbins are avoided. Furthermore, a corresponding method should be specified.

This object is achieved in a slitter according to the invention in that the cores are connected at their joints by sleeves together, which are preferably automatically introduced before the insertion of the cores in the reel winding devices and which are preferably automatically removed after the ejection of the cores from the reel winding device.

The object of the invention is completely solved in this way.

Advantageous developments emerge from the dependent claims, the description and the drawings.

Due to the inventive design of the slitter cutting machine vibrations due to a fixed, radial joining of the winding tubes are avoided in particular. Also, the windings produced usually have higher qualities, since the end faces in the role ejection not damaged because the entire sentence can not move against each other. Thus, there is no stamping of the end faces by adjacent rolls. Furthermore, a conditional on the cutting separation supernatant of the cores is completely avoided.

The sleeve preferably has a cylindrical, preferably hollow cylindrical base body and it also has a preferably centrally arranged collar which has a collar width in the region of a cut separation between two partial material webs and which has a maximum collar diameter smaller than or equal to the outer diameter of the tubular core. Thus, the sleeve can easily be adapted to the two inner contours of the contacting cores with a light weight. In addition, it does not stand out about the two outer diameter of the contacting cores and the above-mentioned supernatant of the cores is positively avoidable.

So that the sleeve is not undefined pulled out during the axial separation of the two contacting winding rollers and even falls out, at least one half of the sleeve is preferably provided on its circumference with a plurality of beads, so that it clamps different degrees in the two cores. The beads in this case have a preferred bead height in the range of 0.1 to 2 mm, preferably from 0.5 to 1 mm. The beads are introduced into the sleeve surveys any cross-sectional contour.

Also, the beads may have rectilinear and / or curved bead contours, which are preferably aligned in or at least substantially in the longitudinal direction of the sleeve. The beads may be interrupted sporadically. Depending on the application and separation conditions, the measures create ideal conditions for optimized and versatile use of the sleeve.

The sleeve preferably has at least three, preferably at least six beads arranged on its circumference. This is an ideal and preferable full clamping of two adjacent cores given by an introduced sleeve.

Thus, the sleeve is not undefined pulled out during the axial separation of the two contacting rolls and even falls out, is provided in the second preferred embodiment, that one half of the sleeve has a different diameter than the other half of the sleeve, so that they vary in strength in the two Winding sleeves stuck. The difference in diameter is preferably in the range of 0.1 to 0.5 mm.

For the purpose of facilitating the introduction of a sleeve in at least one winding tube, it is provided at its two-sided ends, each with a chamfer having a chamfer angle in the range of 30 to 60 °.

The object of the invention is procedurally achieved in that the cores are connected at their joints by sleeves with each other, which are introduced before the insertion of the cores in the reel winding devices and which are preferably automatically removed after the out of the reel winding device of the cores.

The sleeves can be inserted manually or automatically before inserting the cores into the reel winders. After ejecting the cores from the reel winder, the sockets can be removed manually or in a separate station or in a packaging line by a robot.

Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

Figur 1

eine perspektivische Ansicht einer zwischen zwei Wickelhülsen eingebrachten Muffe; und

Figur 2

eine perspektivische Ansicht der in Figur 1 dargestellten Muffe.

Show it

FIG. 1

a perspective view of an inserted between two cores sleeve; and

FIG. 2

a perspective view of the sleeve shown in Figure 1.

FIG. 1 shows a perspective view in the form of a wire model of two adjacent and unwound winding tubes 1, 2.

Such cores 1, 2 are used in a known roll winding device, in particular for a slitter, for simultaneously winding a plurality of juxtaposed partial material webs, in particular paper or board webs, to bobbins. In each case, a winding position is provided for each winding roll, wherein a plurality of winding positions are arranged in the axial direction one behind the other. Furthermore, a winding roller forming a winding bed arrangement is provided below the winding positions.

The two cores 1, 2 are connected at their joints 3, 4 by a sleeve 5 with each other, which is preferably automatically inserted before the insertion of the cores 1, 2 in the reel winding device and preferably after the ejection of the cores 1, 2 from the reel winding device is automatically removable.

This axial separation of the winding rolls must be imagined as follows: The finished roll throw is ejected. Thanks to the sleeves, it now rolls as a closed composite ("cardboard box") on a conveyor belt, which - seen in the direction of travel - is installed behind the slitter and arranged at right angles to the center line of the cutting machine. This leading to the roll packaging plant transport path is divided into at least two sections. The litter is now removed so that the downstream first finishing roll comes to lie on the second transport section, while the rest of the rolls still remain on the first section. In this situation, the conveyor belt of the first section is stopped while the Follower conveyor continues to run and takes the first role. Here are narrow rolls in addition to hold or support. The sleeve, which has the first and the second role connected to each other, thanks to the Muffenwülste the first role stuck. If the second roll is then separated in an analogous manner, then it reaches the packing plant together with its sleeve facing the packing machine. Here, the "disturbing" sleeve, as already stated, either manually or be removed by a robot - automatic roll packaging machines usually have robots for the creation of the front cover anyway; These robots could be used to pull the sleeves out of the sleeves.

The sleeve 5 can be introduced manually before inserting the cores 1, 2 in the reel winder and it can be removed after ejection of the cores 1, 2 from the reel winding apparatus manually or in a separate station or in a packaging system by a robot. Such, having a robot packaging system is for example from the European Patent EP 0 610 662 B1 known.

FIG. 2 shows a perspective view of the sleeve 5 shown concealed in FIG. 1 in the wire model.

The sleeve 5 has both a cylindrical, preferably hollow cylindrical body 6 as a preferably centrally arranged collar 7. The collar 7 has a collar width B ₇ in the region of a cut separation between two partial material webs. Furthermore, the maximum collar diameter D _{7 is} smaller than or equal to the two outer diameter sleeves D ₁ , D ₂ (see FIG.

The left half 8 of the sleeve 5 is provided on its circumference 9 in such a way with a plurality of beads 10 so that it clamps different degrees in the two winding tubes 1, 2. The beads 10 have a respective bead height H ₁₀ in the range of 0.1 to 2 mm, preferably from 0.5 to 1 mm. Of course, the sleeve 5 in further embodiment also have beads on both sides 10, which can be designed differently.

The beads 10 which can be seen in FIG. 2 have straight-line bead contours 11, which are preferably aligned in or at least substantially in the longitudinal direction L (double arrow) of the sleeve 5. However, the bead contours 11 may also assume other contour shapes, for example curved, alone or in combination with each other.

The sleeve 5 has six arranged on its circumference 9 and only partially visible beads 10. From a practical point of view, the sleeve 5 should have at least three such beads 10.

Further, the sleeve 5 is provided at its two-sided ends 12, 13, each with a chamfer 14, 15, which have a chamfer angle α in the range of 30 to 60 °.

In addition, in a non-illustrated embodiment, one half of the sleeve 5 have a different diameter than the other half of the sleeve 5, so that it clamps different degrees in the two winding tubes 1, 2. Thus, the sleeve 5 during the axial separation of the two contacting winding rolls 1, 2 is not undefined pulled out.

The illustrated cores 1, 2 together with sleeve 5 are also particularly suitable for carrying out the method according to the invention.

In summary, it should be noted that the invention provides a reel cutting machine of the type mentioned in such a way that disturbances in the winding of the winding rolls and in the further processing of the winding rolls are avoided.

LIST OF REFERENCE NUMBERS

1

mandrel

2

mandrel

3

joint

4

joint

5

sleeve

6

body

7

collar

8th

half

9

scope

10

bead

11

Wulstkontur

12

The End

13

The End

14

chamfer

15

chamfer

B ₇

collar width

D ₁

Reel sleeve outer diameter

D ₂

Reel sleeve outer diameter

D ₇

Collar diameter

H ₁₀

bead height

L

Longitudinal direction (double arrow)

α

bevel angle

Claims (10)

Reel winding apparatus, in particular for a reel cutting machine, for simultaneously winding a plurality of juxtaposed partial material webs, in particular paper or board webs, on winding cores (1, 2) to winding reels, each having a winding position for each reel, wherein a plurality of winding positions are arranged in the axial direction one behind the other, and with a winding-bed arrangement forming a winding-bed arrangement below the winding positions,
characterized,
in that the winding tubes (1, 2) are connected to one another at their joints (3, 4) by sleeves (5), which are preferably automatically insertable into the roll winding device before the winding tubes (1, 2) are pushed in and which after ejection of the winding tubes (1, 2) are preferably automatically removed from the roll winding device. Roll winding device according to claim 1,
characterized,
that the sleeve (5) has a cylindrical, preferably hollow cylindrical base body (6) and
in that the sleeve (5) has a preferably centrally arranged collar (7) which has a collar width (B ₇ ) in the region of a sectional separation between two partial material webs and the one maximum collar diameter (D ₇ ) smaller than or equal to the outer diameter of the winding core ( D ₁ , D ₂ ). Roll winding device according to claim 1 or 2,
characterized,
that at least one half (8) of the sleeve (5) is provided on its circumference (9) with a plurality of beads (10), so that it clamps different degrees in the two winding tubes (1, 2), and
in that the beads (10) have a bead height (H ₁₀ ) in the range from 0.1 to 2 mm, preferably from 0.5 to 1 mm. Roll winding device according to claim 3,
characterized,
in that the beads (10) have rectilinear and / or curved bead contours (11), which are preferably aligned in or at least substantially in the longitudinal direction (L) of the sleeve (5). Roll winding device according to claim 3 or 4,
characterized,
that the sleeve (5) has at least three, preferably at least six, at its periphery (9) are arranged ridges (10). Roll winding device according to claim 1 or 2,
characterized,
that one half of the sleeve (5) has a different diameter than the other half of the sleeve (5), so that it clamps different degrees in the two winding tubes (1, 2). Roll winding device according to one of the preceding claims,
characterized,
in that the sleeve (5) is provided at its two-sided ends (12, 13) with in each case one chamfer (14, 15) which have a chamfer angle (α) in the range from 30 to 60 °. A method for the simultaneous winding of several juxtaposed partial material webs, in particular paper or board webs, on winding tubes (1, 2) to winding rollers in a roll winding device, in particular for a slitter winder, each having a winding position for each winding roll, wherein a plurality of winding positions in the axial direction one behind the other be arranged, and with a winding bed forming support roller assembly below the winding positions,
characterized,
in that the winding tubes (1, 2) are connected to one another at their joints (3, 4) by sleeves (5) which are introduced into the roll winding device before the winding tubes (1, 2) are pushed in and which after ejection of the winding tubes (1 , 2) are preferably automatically removed from the reel winder. Method according to claim 8,
characterized,
in that the sleeves (5) are inserted manually or automatically before the winding sleeves (1, 2) are inserted into the roll winding device. Method according to claim 8 or 9,
characterized,
in that the sleeves (5) are removed from the roll winding device manually or in a separate station or in a packaging installation by a robot after the discharge of the winding tubes (1, 2).

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